Propulsion mechanism for rail-grinders.



G. B. PELLISSIER.` PROPULSION MEGHANISM FOR RAIL GBINDBRS.

APPLICATION FILD FBBHI. 1912.

l Patented Jul-y 16,

Y rive/vraie Gear QE'. Pel 552er G. E. PBLLISS-IBR.

PRoPULsIoN MBGHANISMIOR RAIL GRINDBRS.

APPLICATION FILED FEB.7,1912.

Patented July 16, 1912 2 SHEETS-SHEET 2.

VHauff/Jion I G'fvryeE- ssz'e Arionwfr -W/TNESSES UNiTED 'STATES PATENT oFFioE.

GEORGE E. PELLISSIR, F JERSEY CITY, NEW JERSEY, ASSIGNOR T0 LOUIS D.

l IPELLISSIER, OF HOLYOKE, MASSACHUSETTS. u

` rRoPULsIoN MEoHANrsM Fon RAIL-GRINDERS.'

Losanna] Y of Jersey City, county of Hudson, and 4State of New Jersey, have invented certain new and useful Improvements in Propulsion Mechanism for Rail-Grinders, set forth in the following specification.

This invention relates to propulsion mechA anism 1for trucks adapted to be operated upon railway tracks and the invention is especially applicable to such a truck as is illustrated in my co-pendin application Serial No. 66(Y ,115, filed Decem er 21, 1911, for rail grinder.

An object sought to be attained is the pro- `vision of a positive and uniform propulsion of the truck, in such a manner as to effect a moveme t of the truck either forwardly or rearwarV y at the will of the operator and with all requisite convenience either through Athe medium of hand-propulsion or 'powerpropulsion.

The above `and further objects of the .invention-.are set' forth in the following claims whihshould be read in connection with this specification which has reference to an illustrativierembodiment of the invention, Ashown in th accompanying drawings, which form a pa of thisapplication, and inl which,-

Figure 1-; is a 'plan view of a truck provided with thefpropulsion mechanism forming the subject-A matter of this application,

parts of saidtruck 'being broken away to evidence thatlany` deslred 'mechanismmay be carried, suchfor instance, as.` that illustrated in the co-pending application above referred to; Fig 2 1s an enlarged transverse sectional view taken substantially on the piane of line Iii- II of Fig. 1; and Fig. 3 is a correspondingly enlarged detail sectional View 4taken at rlght angles to the view shown in Fig. 2, said section being taken substantially on the plane of line III-III of Fig. l.

Referring to the parts by numerals,-1 indicates the outer frame and 2 the flooring of the truck platform.

lindicates the traction Wheels: and 4 the idler wheels. The traction wheels 3 are supported from'the under surface `of the platform frame 1 in suitable bearings andv are' fixed to an axle 6 which is freely' rotatable in the bearings 5.

Fitted upon the axle 6, between the wheels 3, are a pair of sleeves 7, said sleeves being Specification of Letters Patent.

. Application led February 7, 1912.V Serial No 676:381.

free to rotate.

' ber 11 is moved. The shiftableclutch member 11 is formed -with an annular guide- Patented July/16, 19:12.

' placed end to end and being spaced apart leaving a central portion of the'axle 6 uncovered thereby.` The outer ends ofthe respective sleeves 7 engage the inner vsurface portions ofthe hubs of the wheels 3 and the mner ends of the sleeves enga e retaining washers or rings 8 which are xed rigidly to the axle 6 and said sleeves are thus positively held against longitudinal movement along the axle. The sleeves, however, are

At the outer ends of each of the sleeves 7 is fixed a drive gear 9. At the inner ends each of'said sleeves is formed or provided with a clutch member 10, said clutch members being of the friction type and having their faces opposing.

Feathered upon the uncovered portion of the axle 6, intermediate the rings 8, is a shiftable clutch member 11 having opposing conical clutch surfaces 12*12, said surfaces being adapted to engage one or the other of the clutch members 10 according to the direetion into which the shiftable clutch memgroove 13 adapted to be engaged by inwardly projecting pins 14 formed upon the lower end of a yoke arm 15 which is pivotally mounted 1n the intermediate frame work 16,'of the truck-platform. The upper end of th'p yoke-arm 15 Hexibly engages an internally threaded sleeve 17 the threads ofl which are in turn engaged by the threads of an externally threaded screw 18 which is '90 fixed to a rotatably mounted shaft 19. The shaft 1 9 extends transverselyl ofthe platform and projects slightly beyondthe oppo-v site sidefaces thereof, said projecting portions being' fitted with suitable operating 95 liandles'20. i

Mounted upon the floor 2 of the platform is a motor 2 1, the power shaft 22 of which is extendedtiiansversely of the platform in a plane substantially parallel with the axle 6. 100

The opposite, ends of the shaft 22 are ex tended through flexible couplings 23 1 nto casings 2 4. LEach of the casings 24 comprises a pair of bearings 25 spaced apart and supporting the power shaft. Intermed1atethe 19.5

bearings 25 in each casing 24, a worm pinion 26 isixed to the shaft 22 and saldfplnlons are adapted to engagev and rotate worm gears 27 carried upon supplemental power 1 shafts 28, which extend substantially verti- 110 i cally through theplatform downwardly into proximity with the gears 9 on the traction wheel axle 6. Worm pinions 29 are fixed to the lower ends of the shafts 2S, and the teeth thereof engage the teeth of the drive gears 9.

Theconfiguration and assemblement of the several gears and pmions is such that a continuous rotation of the.powe r shaft 22 in one direction will serve to rotate the gears 9 in opposite directions.

Since it may ofttimes be advisable, or necessary to rotatethe shafts 28 by hand, insteadl of the power transmitted from the shaft 22 into the gears 27, it is advisable that the said gears be',so mounted upon the shafts 28 as to be 'caused to impart their -.rotation to said shafts only after the appropriate manipulation of clutch members 30., At other times said gears are free to rotate without imparting movement to the shafts. Suitable hand-wheels 31 arev fixed to the I upper ends of the shafts 28 for imparting movement thereto by hand 4when the respective gears 27 are released.

A convenient safety guard 32 covers each setof gears 26, 2T for the protection of workmen.

From the foregoing it will be apparent thatl power from the shaft 22, driving the gears 9, and with them the clutch members l0, in opposite directions.

to the .axle 6 for driving said axle in either direction according to' theposition `of the' shiftable clutch member 11, andthasaid clutch member may be readily shifted into tight frictional engagementavith either of the clutch members 10 by rotation of the shaft 19 through the medium of the operating handles 20at opposite sides of the truck platform.

What is claimed and what is desired to be secured by .United States Letters Patent- 1. In a rail grinder adapted to operate upon either rail, a truck for the grinder mechanism comprising a platform; a traction wheel; a power shaft, mounted upon said platform; means operated thereby adapted to rotate said traction wheel in two directions; and means extending upon opposite sides of said platform' adapted for selecting the direction of rotation imparted to said-traction wheel. said means being adapted to be conveniently operated by operators at either side of said-platform.

2. In a propulsion mechanism for trucks, the combination comprisingv a platffmfvi;` a traction wheel; an axle fixed to saidwheel; a pair of drive gears freely rotatable upon said axle; means for rotating said drive gears .in opposite directions; a pair of Clutch members one fixed to and rotatable may be imparted with each of said gears; a shiftable clutch member feathered upon said axle adapted to be shifted for engagement-with either of said first mentioned clutch members wherethus engaged may be transmitted through 'said shiftable clutch member to said axle for,rotating said axle and said traction wheel in the' direction of rotation of the drive gear Ato which the engaged clutch member is fixed; and means extending upon opposite sides of said platform whereby said shiftable clutch member may be conveniently shifted at will by operators at either side of said platform.

the combination comprising a` platform; a traction wheel; an axle fixed to said wheel; a pair of drive .gearsfreely rotatable upon said axle; a pair of clutch members one fixed to and rotatable with each of said gears; a shiftable clutch member feathered upon said axle adapted to be'shifted for eng. gement with either of said first mentioned ,clutch members -upon said platform; Supplemental power adapted to drive said drive gears in oppoL site directions ;.and means extending upon opposite sides of. said platform whereby said shiftable clutch members may be conveniently shifted atwill by operators at either side of said platform.

l. ln a propulsion mechanism for trucks; the combination comprising a plat-form; a traction wheel; an axle fixed to said wheel: a vpair of drive gears freely rotatable upon said axle; a pair of clutch members' one fixed to and rotatable with each of said gears; a shiftable clutch member feathered gagenrent with either of said first mentioned clutch members: ,a power shaft mounted upon said fixed thereto: supplemental` power shafts pinions; clutch mechanisms for fixing said worm geais to said supplemental power shafts; said lsupplemental power shafts beingv adapted to drive said drive' gears in op posite directions; and upon'opposite sides of said platform wherebysaid shiftable clutch member maybe conveniently shifted at will either side of said platform. l

.I n witness whereof, I have signed my name to this'specification7 in the presence of two subscribing witnesses.

GEORGE E. PELLISSTER. lVtnesses IsipoR NINER,

LEONARD DAY.

g the Commissioner o f Patents.

platform having worm pinions by the movementl of such clutch member,

3.1n a propulsion mechanism for trucks:-

; a power shaft mounted shafts driven by said first power shaft and upon said axle adapted 'to b e shifted for encarrying worm gears .engaging said wormV means extending by operators at 

